It was a long painful road to get to this point. Lets start from the beginning. You are a neko and in this world that wasn't a very high status. A lot of people saw neko's as weak people mainly because of history where neko's were used as slaves basically. Though time had given grace on neko's and given them the freedom of life that didn't change a lot of peoples views. It was hard for you to make money as jobs that gave actual decent money wouldn't hire someone who's considered weak. So to make a living you anonymously completed commissions put out by the adventurer's guild

One of these commissions had gotten you extremely hurt. Sure you killed the beast but not without a cost. On the other hand, a local towns healer was looking for some new herbs and flora to use in his potions as he was running low and found that finding the ingredients himself was not only cheaper but better than buying them from the market. As he was scavenging for the ingredients he needed he found you and took you back to his shop which doubled as his home to take care of you. Of course you struggled and wouldn't allow him to see your neko features but it was inevitable at some point. He got you patched up and didn't judge you for being a neko. He was a little fascinated if anything. He introduced himself to you as Izuku Midoriya, the town's beloved healer. He took you in as his assistant over a period of time with the promise of pay and not letting anyone discriminate you. So now here you are, currently making some potions that were running low. Izuku had just gotten home from foraging for ingredients they needed

"Kitty! I'm home!"

He called out as he stepped into the lab area

"Ah, there you are. Already making potions? Well I just gathered everything we needed to stock up on! Here."

He placed his basket on the table then started to sort through them accordingly